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executable file 491 lines (373 sloc) 15.892 kb
#!/usr/bin/python
# Copyright (c) 2008 Alon Swartz <alon@turnkeylinux.org> - all rights reserved
import os
import sys
import dialog
import ipaddr
from string import Template
import ifutil
import netinfo
import executil
import conf
from StringIO import StringIO
import traceback
class Error(Exception):
pass
class Console:
def __init__(self, title=None, width=60, height=20):
self.width = width
self.height = height
self.console = dialog.Dialog(dialog="dialog")
self.console.add_persistent_args(["--no-collapse"])
self.console.add_persistent_args(["--ok-label", "Select"])
self.console.add_persistent_args(["--cancel-label", "Back"])
self.console.add_persistent_args(["--colors"])
if title:
self.console.add_persistent_args(["--backtitle", title])
def _handle_exitcode(self, retcode):
if retcode == 2: # ESC, ALT+?
text = "Do you really want to quit?"
if self.console.yesno(text) == 0:
sys.exit(0)
return False
return True
def _wrapper(self, dialog, text, *args, **kws):
try:
method = getattr(self.console, dialog)
except AttibuteError:
raise Error("dialog not supported: " + dialog)
while 1:
ret = method("\n" + text, *args, **kws)
if type(ret) is int:
retcode = ret
else:
retcode = ret[0]
if self._handle_exitcode(retcode):
break
return ret
def infobox(self, text):
return self._wrapper("infobox", text)
def yesno(self, text):
return self._wrapper("yesno", text)
def msgbox(self, title, text, button_label="ok"):
return self._wrapper("msgbox", text, self.height, self.width,
title=title, ok_label=button_label)
def menu(self, title, text, choices, no_cancel=False):
return self._wrapper("menu", text, self.height, self.width,
menu_height=len(choices)+1,
title=title, choices=choices, no_cancel=no_cancel)
def form(self, title, text, fields, ok_label="Apply", cancel_label="Cancel"):
return self._wrapper("form", text, self.height, self.width,
form_height=len(fields)+1,
title=title, fields=fields,
ok_label=ok_label, cancel_label=cancel_label)
class Installer:
def __init__(self, path):
self.path = path
self.available = self._is_available()
def _is_available(self):
if not os.path.exists(self.path):
return False
fh = file('/proc/cmdline')
cmdline = fh.readline()
fh.close()
for cmd in cmdline.split():
if cmd == "boot=casper":
return True
return False
def execute(self):
if not self.available:
raise Error("installer is not available to be executed")
executil.system(self.path)
class TurnkeyConsole:
OK = 0
CANCEL = 1
def __init__(self):
title = "TurnKey Linux Configuration Console"
self.width = 60
self.height = 20
self.console = Console(title, self.width, self.height)
self.appname = "TurnKey Linux %s" % netinfo.get_hostname().upper()
self.installer = Installer(path='/usr/bin/di-live')
@staticmethod
def _get_filtered_ifnames():
ifnames = []
for ifname in netinfo.get_ifnames():
if ifname.startswith(('lo', 'tap', 'br', 'tun', 'vmnet', 'wmaster')):
continue
ifnames.append(ifname)
ifnames.sort()
return ifnames
@classmethod
def _get_default_nic(cls):
def _validip(ifname):
ip = ifutil.get_ipconf(ifname)[0]
if ip and not ip.startswith('169'):
return True
return False
ifname = conf.Conf().default_nic
if ifname and _validip(ifname):
return ifname
for ifname in cls._get_filtered_ifnames():
if _validip(ifname):
return ifname
return None
def _get_advmenu(self):
items = []
items.append(("Networking", "Configure appliance networking"))
if self.installer.available:
items.append(("Install", "Install to hard disk"))
items.append(("Reboot", "Reboot the appliance"))
items.append(("Shutdown", "Shutdown the appliance"))
items.append(("Quit", "Quit the configuration console"))
return items
def _get_netmenu(self):
menu = []
for ifname in self._get_filtered_ifnames():
addr = ifutil.get_ipconf(ifname)[0]
ifmethod = ifutil.get_ifmethod(ifname)
if addr:
desc = addr
if ifmethod:
desc += " (%s)" % ifmethod
if ifname == self._get_default_nic():
desc += " [*]"
else:
desc = "not configured"
menu.append((ifname, desc))
return menu
def _get_ifconfmenu(self, ifname):
menu = []
menu.append(("DHCP", "Configure networking automatically"))
menu.append(("StaticIP", "Configure networking manually"))
if not ifname == self._get_default_nic() and \
len(self._get_filtered_ifnames()) > 1 and \
ifutil.get_ipconf(ifname)[0] is not None:
menu.append(("Default", "Show this adapter's IP address in Usage"))
return menu
def _get_ifconftext(self, ifname):
addr, netmask, gateway, nameservers = ifutil.get_ipconf(ifname)
if addr is None:
return "Network adapter is not configured\n"
text = "IP Address: %s\n" % addr
text += "Netmask: %s\n" % netmask
text += "Default Gateway: %s\n" % gateway
text += "Name Server(s): %s\n\n" % " ".join(nameservers)
ifmethod = ifutil.get_ifmethod(ifname)
if ifmethod:
text += "Networking configuration method: %s\n" % ifmethod
if len(self._get_filtered_ifnames()) > 1:
text += "Is this adapter's IP address displayed in Usage: "
if ifname == self._get_default_nic():
text += "yes\n"
else:
text += "no\n"
return text
def usage(self):
#if no interfaces at all - display error and go to advanced
if len(self._get_filtered_ifnames()) == 0:
self.console.msgbox("Error", "No network adapters detected")
return "advanced"
#if interfaces but no default - display error and go to networking
ifname = self._get_default_nic()
if not ifname:
self.console.msgbox("Error", "Networking is not yet configured")
return "networking"
#tklbam integration
try:
tklbam_status = executil.getoutput("tklbam-status --short")
except executil.ExecError:
tklbam_status = ''
#display usage
ipaddr = ifutil.get_ipconf(ifname)[0]
hostname = netinfo.get_hostname().upper()
try:
#backwards compatible - use usage.txt if it exists
t = file(conf.path("usage.txt"), 'r').read()
text = Template(t).substitute(hostname=hostname, ipaddr=ipaddr)
retcode = self.console.msgbox("Usage", text,
button_label="Advanced Menu")
except conf.Error:
t = file(conf.path("services.txt"), 'r').read().rstrip()
text = Template(t).substitute(ipaddr=ipaddr)
text += "\n\n%s\n\n" % tklbam_status
text += "\n" * (self.height - len(text.splitlines()) - 7)
text += " TurnKey Backups and Cloud Deployment\n"
text += " https://hub.turnkeylinux.org"
retcode = self.console.msgbox("%s appliance services" % hostname,
text, button_label="Advanced Menu")
if retcode is not self.OK:
self.running = False
return "advanced"
def advanced(self):
#dont display cancel button when no interfaces at all
no_cancel = False
if len(self._get_filtered_ifnames()) == 0:
no_cancel = True
retcode, choice = self.console.menu("Advanced Menu",
self.appname + " Advanced Menu\n",
self._get_advmenu(),
no_cancel=no_cancel)
if retcode is not self.OK:
return "usage"
return "_adv_" + choice.lower()
def networking(self):
ifnames = self._get_filtered_ifnames()
#if no interfaces at all - display error and go to advanced
if len(ifnames) == 0:
self.console.msgbox("Error", "No network adapters detected")
return "advanced"
# if only 1 interface, dont display menu - just configure it
if len(ifnames) == 1:
self.ifname = ifnames[0]
return "ifconf"
# display networking
text = "Choose network adapter to configure\n"
if self._get_default_nic():
text += "[*] This adapter's IP address is displayed in Usage"
retcode, self.ifname = self.console.menu("Networking configuration",
text, self._get_netmenu())
if retcode is not self.OK:
return "advanced"
return "ifconf"
def ifconf(self):
retcode, choice = self.console.menu("%s configuration" % self.ifname,
self._get_ifconftext(self.ifname),
self._get_ifconfmenu(self.ifname))
if retcode is not self.OK:
# if multiple interfaces go back to networking
if len(self._get_filtered_ifnames()) > 1:
return "networking"
return "advanced"
return "_ifconf_" + choice.lower()
def _ifconf_staticip(self):
def _validate(addr, netmask, gateway, nameservers):
"""Validate Static IP form parameters. Returns an empty array on
success, an array of strings describing errors otherwise"""
errors = []
if not addr:
errors.append("No IP address provided")
elif not ipaddr.is_legal_ip(addr):
errors.append("Invalid IP address: %s" % addr)
if not netmask:
errors.append("No netmask provided")
elif not ipaddr.is_legal_ip(netmask):
errors.append("Invalid netmask: %s" % netmask)
for nameserver in nameservers:
if nameserver and not ipaddr.is_legal_ip(nameserver):
errors.append("Invalid nameserver: %s" % nameserver)
if len(nameservers) != len(set(nameservers)):
errors.append("Duplicate nameservers specified")
if errors:
return errors
if gateway:
if not ipaddr.is_legal_ip(gateway):
return [ "Invalid gateway: %s" % gateway ]
else:
iprange = ipaddr.IPRange(addr, netmask)
if gateway not in iprange:
return [ "Gateway (%s) not in IP range (%s)" % (gateway,
iprange) ]
return []
addr, netmask, gateway, nameservers = ifutil.get_ipconf(self.ifname)
input = [addr, netmask, gateway]
input.extend(nameservers)
# include minimum 2 nameserver fields and 1 blank one
if len(input) < 4:
input.append('')
if input[-1]:
input.append('')
field_width = 30
field_limit = 15
while 1:
fields = [
("IP Address", input[0], field_width, field_limit),
("Netmask", input[1], field_width, field_limit),
("Default Gateway", input[2], field_width, field_limit),
]
for i in range(len(input[3:])):
fields.append(("Name Server", input[3+i], field_width, field_limit))
text = "Static IP configuration (%s)" % self.ifname
retcode, input = self.console.form("Network settings", text, fields)
if retcode is not self.OK:
break
# remove any whitespaces the user might of included
for i in range(len(input)):
input[i] = input[i].strip()
# unconfigure the nic if all entries are empty
if not input[0] and not input[1] and not input[2] and not input[3]:
ifutil.unconfigure_if(self.ifname)
break
addr, netmask, gateway = input[:3]
nameservers = input[3:]
for i in range(nameservers.count('')):
nameservers.remove('')
err = _validate(addr, netmask, gateway, nameservers)
if err:
err = "\n".join(err)
else:
err = ifutil.set_static(self.ifname, addr, netmask,
gateway, nameservers)
if not err:
break
self.console.msgbox("Error", err)
return "ifconf"
def _ifconf_dhcp(self):
self.console.infobox("Requesting DHCP for %s..." % self.ifname)
err = ifutil.set_dhcp(self.ifname)
if err:
self.console.msgbox("Error", err)
return "ifconf"
def _ifconf_default(self):
conf.Conf().set_default_nic(self.ifname)
return "ifconf"
def _adv_install(self):
text = "Please note that any changes you may have made to the\n"
text += "live system will *not* be installed to the hard disk.\n\n"
self.console.msgbox("Installer", text)
self.installer.execute()
return "advanced"
def _shutdown(self, text, opt):
if self.console.yesno(text) == self.OK:
self.running = False
cmd = "shutdown %s now" % opt
fgvt = os.environ.get("CONFCONSOLE_FGVT")
if fgvt:
cmd = "chvt %s; " % fgvt + cmd
executil.system(cmd)
return "advanced"
def _adv_reboot(self):
return self._shutdown("Reboot the appliance?", "-r")
def _adv_shutdown(self):
return self._shutdown("Shutdown the appliance?", "-h")
def _adv_quit(self):
if self.console.yesno("Do you really want to quit?") == self.OK:
self.running = False
return "advanced"
_adv_networking = networking
def loop(self, dialog="usage"):
self.running = True
prev_dialog = dialog
while dialog and self.running:
try:
try:
method = getattr(self, dialog)
except AttributeError:
raise Error("dialog not supported: " + dialog)
new_dialog = method()
prev_dialog = dialog
dialog = new_dialog
except Exception, e:
sio = StringIO()
traceback.print_exc(file=sio)
self.console.msgbox("Caught exception", sio.getvalue())
dialog = prev_dialog
def fatal(e):
print >> sys.stderr, "error: " + str(e)
sys.exit(1)
def main():
if os.geteuid() != 0:
fatal("confconsole needs root privileges to run")
TurnkeyConsole().loop()
if __name__ == "__main__":
main()
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